In what two cases could a quadratic equation have no zeros?

1.	In what two cases could a quadratic equation have no zeros?
Answer» $\red {quadratic \: equation : - } \\ \blue {a {x}^{2} + bx + c = 0 } \\ \purple {if \: b {}^{2} - 4ac < 0 } \\ \green{then \: the \: quadratic \: equation \: has} \\ \green {no \: real \: roots.}$

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$\red {quadratic \: equation : - } \\ \blue {a {x}^{2} + bx + c = 0 } \\ \purple {if \: b {}^{2} - 4ac < 0 } \\ \green{then \: the \: quadratic \: equation \: has} \\ \green {no \: real \: roots.}$

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In what two cases could a quadratic equation have no zeros?

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